10 results about "Toxic pollution" patented technology

The invention discloses application of electrochemical active bacteria sensitive to polycyclic aromatic hydrocarbon pollutants in detection of water quality biotoxicity, and belongs to the technical field of water quality biotoxicity detection.The water quality biotoxicity of toxic pollutants is measured according to the electric signal inhibition rate of bacteria liquid of the electrochemical active bacteria; the electrochemical active bacteria are azospirillum, specifically azospirillum brazilianum. The novel water quality biotoxicity detection technology based on the electrochemical active bacteria can directly convert the toxicity into an electric signal, is expected to improve the sensitivity of measuring the biotoxicity of the polycyclic aromatic hydrocarbon pollutants, overcomes the application bottleneck of low sensitivity, and provides technical support for biotoxicity monitoring work in China.

The invention discloses a gallium-indium-tin alloy negative pressure vacuum filling system, and belongs to the technical field of precise instrument manufacturing. The system comprises an alloy preparation unit, a vacuum generation unit, a filling control unit, a quality monitoring unit, a waste gas treatment unit and a central control system. Alloy oxidation is prevented through full-process inert gas protection, bubble-free precise filling is realized by adopting a multi-stage vacuum and self-adaptive negative pressure control strategy, and the filling consistency and reliability are ensured by integrating multi-sensor quality monitoring. The system effectively solves the toxic pollution problem of traditional mercury filling, overcomes the filling problems that gallium-indium-tin alloy is high in viscosity and prone to oxidation, is mainly applied to mercury-free manufacturing of precision instruments such as pressure sensors and medical instruments, and has the advantages of being high in precision, high in safety, environmentally friendly, high in adaptability and the like.

The invention discloses application of electrochemical active bacteria sensitive to organochlorine pollutants in detection of water quality biotoxicity, and belongs to the technical field of water quality biotoxicity detection.After a bacteria solution of the electrochemical active bacteria is exposed in toxic pollutants, the water quality biotoxicity is determined according to an electric signal inhibition rate; the toxic pollutants are organic chlorine pollutants; the electrochemical active bacterium is a pseudomonas genus, and specifically, the pseudomonas genus is Pseudomonas lopnurensis or Pseudomonas delhiensis. The invention further discloses a preparation method of the electrochemical active bacterium. The method provided by the invention is expected to improve the sensitivity of determining the biotoxicity of the organic chlorine pollutants, overcome the application bottleneck of low sensitivity, and provide technical support for biotoxicity monitoring work.

The invention discloses application of electrochemical active bacteria sensitive to benzene series pollutants in detection of water quality biotoxicity, and belongs to the technical field of water quality biotoxicity detection.The water quality biotoxicity of toxic pollutants is measured according to the electric signal inhibition rate of bacteria liquid of the electrochemical active bacteria; the toxic pollutants are benzene series pollutants; the electrochemical active bacteria are toxobacter, specifically, the toxobacter pacificus. The method provided by the invention is relatively simple and convenient in overall operation, can quickly obtain a detection result under the condition of reasonably controlling time and conditions, can timely and effectively evaluate the biotoxicity condition of the water body polluted by the benzene series pollutants, provides a powerful basis for environmental protection, water resource management and related pollution abatement decisions, and has a wide application prospect. And the method has relatively high practicability and application prospects.

The application is a kind of ecological water permeable brick for recycling construction waste and a preparation method thereof, the ecological water permeable brick is made of the following raw materials by weight: 450-500 parts of waste glass aggregate, 200-250 parts of dewatered municipal sludge, 75-125 parts of iron tailings powder, 75 parts of water, 26 parts of pore forming agent, 1-3 parts of nano calcium carbonate and 1-3 parts of nano titanium dioxide. The solid waste is processed into ecological water permeable brick through harmless and resourceful treatment, thereby improving the utilization rate of solid waste; the nano titanium dioxide has self-cleaning effect under light, can oxidize toxic pollutants in the air into inorganic substances such as CO2 and H2O, has the advantages of fast decomposition speed, high removal rate and the like, and has certain environmental protection advantages; the waste glass is used as aggregate to absorb solid waste, at the same time, the light absorption of the water permeable brick is increased, the use amount of nano titanium dioxide is reduced under the same effect condition, and certain economic advantages are achieved.

The invention discloses application of electrochemical active bacteria sensitive to heavy metal pollutants in detection of water quality biotoxicity, and belongs to the technical field of water quality biotoxicity detection.After the electrochemical active bacteria are exposed to toxic pollutants, the water quality biotoxicity is determined according to an electric signal inhibition rate; the toxic pollutants are heavy metal pollutants; the electrochemical active bacteria are enterobacter aerogenes or enterobacter cloacae and are selected from enterobacter. The electrochemical active bacteria sensitive to the heavy metal pollutants are used, so that the sensitivity of determining the biotoxicity of the heavy metal pollutants is expected to be improved, the application bottleneck of low sensitivity is overcome, and a technical support is provided for biotoxicity monitoring work in China.

The invention discloses a waste gas treatment method for a waste lithium battery recovery process, which comprises the following steps: S1, dust removal pretreatment: collecting composite waste gas through negative pressure suction, and carrying out filtering dust removal treatment on the composite waste gas to obtain pretreated waste gas after dust removal; s2, fractional condensation recovery: performing multi-stage gradient condensation treatment on the pretreated waste gas to recover the organic solvent in the pretreated waste gas and obtain residual non-condensable tail gas; s3, high-temperature oxidative decomposition: performing high-temperature oxidation treatment on the non-condensable tail gas to oxidize residual organic matters in the non-condensable tail gas and obtain high-temperature flue gas containing fluoride and phosphide; and S4, quenching and absorbing: carrying out quenching cooling treatment on the high-temperature flue gas so as to remove acidic components in the high-temperature flue gas. The method provided by the invention realizes efficient resource recovery of the organic solvent and near-zero emission of toxic pollutants, and has the advantages of low energy consumption, high safety, no secondary pollution and the like.

The invention relates to an emergency breathing device (1) for providing treated breathing air from ambient air (2) containing contaminants, in particular toxic contaminants, comprising a central body part (4) with a nose adapter (6) arranged on the outer side of the body part (4), the invention relates to a nose adapter comprising a first and a second connection (10a, 10b) on the nose side, which can be inserted substantially in a flow-tight manner into the nostrils of a person, and / or a nose mask (100), which can only be worn on the nose of the person, characterized in that a first tubular air supply and a second tubular air supply (12a, 12b) are also arranged on the main body part (4), the invention relates to a nasal adapter (6), comprising a first tubular air supply (12a) and a second tubular air supply (12b), which are fluidically connected by means of their first ends to the interior of a first and a second connection (10a, 10b) on the nasal side of the nasal adapter (6) or to the interior of a nasal mask (100), at the second end of which a first filter module (20a) can be received, a second filter module (20b) can be received at a second end of the tubular second air supply (12b), the first filter module and the second filter module each having an inlet (22a, 22b) for introducing contaminated ambient air (2) and an outlet (24a, 24b) for discharging purified ambient air (2), the outlet is in flow connection with the interior of the respective first and second tubular air supply (12a, 12b).

The embodiment of the application relates to a high-salinity wastewater treatment method and a high-salinity wastewater treatment device. Through bipolar membrane electrodialysis-electrosorption treatment of wastewater, high-salinity ions in the wastewater can be effectively separated and recovered, and the concentrations of Cl ‑ , SO4 2‑ , H2PO4 ‑ , etc. are reduced. The bipolar membrane electrodialysis-electrosorption combination has a wide applicable desalination concentration range, is convenient to operate, has low operation cost, can recycle and reuse resources in the wastewater, can reduce the toxicity of the wastewater, and can reduce the interference of ions in the subsequent Fenton reaction process. Through mixing of the first mixed solution and a magnetic iron-based heterogeneous catalyst, metal ions in the wastewater are reduced and toxic pollutants are degraded through the Fenton reaction, the biodegradability of the wastewater is improved, the COD value of the wastewater is reduced, and the wastewater is low-toxic and meets the discharge standard.

The embodiment of the invention provides a water quality detection waste liquid treatment method. The method comprises the following steps: at least dividing waste liquid generated by a monitoring station into chromium-containing waste liquid, organic reagent-containing waste liquid and acid waste liquid, and respectively collecting the chromium-containing waste liquid, the organic reagent-containing waste liquid and the acid waste liquid; treating the chromium-containing waste liquid to generate an iron-containing solution rich in iron ions, adjusting the solution to a stable pH range by using the collected acidic waste liquid, and storing the solution; the stored iron-containing solution is used as a catalyst to treat the organic reagent-containing waste liquid, and an internal circulation form of chromium-containing waste liquid iron production-waste acid iron stabilization-iron catalytic oxidation of organic matters is constructed, so that efficient removal of toxic pollutants in the waste liquid and cyclic utilization of in-station resources are realized; the consumption of exogenous agents and the transportation volume of hazardous wastes are greatly reduced, and the operation cost is reduced. The invention also provides a treatment system applying the method.